Accurate characterization of subsurface geophysical properties and detection the fault system are essential for geothermal energy exploration production. The Soda Lake field is in western Nevada with a complex system. Previous seismic only produced low-resolution, smooth velocity model along simple, conceptual model. Using optimized correlation-based full-waveform inversion, wavefield-separatio...

Numerous observations accumulated principally during the last 40 years show that seismic waves generated from earthquakes and cultural noise may alter water and oil production. In some cases wave excitation may appreciably increase the mobility of fluids. The effect of elastic waves on the permeability of saturated rock has been confirmed in numerous laboratory experiments. Two related applicat...

There are rich geothermal resources in China and they widely distributed. After years of continuous exploration production, most the shallow have been explored current mainly focuses on deep ones. Among a great many geophysical methods, seismic survey is effective means resource but its weak reflection signal, low S/N ratio poor imaging thermal reservoirs due to geological conditions restrict p...

An important part of any CO2 geosequestration project is to ensure containment and conformance in the subsurface. This generally done by implementing a comprehensive, risk-based Measurement, Monitoring Verification plan, key element which active time-lapse seismic monitoring. However, high cost environmental impact standard surface monitoring dictate need for cost-effective environmentally frie...

Active time-lapse seismic is widely employed for monitoring CO2 geosequestration due to its ability track the distribution of fluids in space and time. However, standard 4D suffers from several challenges, including high cost, disruption other land uses, and, consequently, relatively large intervals between monitor surveys. Some these challenges can be mitigated using permanently installed sour...

We rigorously assess the potential for extracting high-resolution, multi-mode surface wave dispersion data from distributed acoustic sensing (DAS) measurements using active-source multichannel analysis of waves (MASW). have utilized both highly-controlled, broadband vibroseis shaker trucks and more-variable, narrow-band sledgehammer sources to excite near surface, compare DAS-derived obtained s...